Pipe and tube sendee



July-315, 1930. E-'"'- T Re. 17,732

' v PIPE AND TUBE BENDER Original Filled Dec. 6, i927 Reissued July15,1930 I UNITED- STATES PATENT OFFICE WALTER ESTES HOLSCLAW AND HARRYELSTON HOLSCLAW, OF EVANSVILLE, INDIANA PIPE AND TUBE IBENDER OriginalNo. 1,687,210, dated October 9, 1928, Serial N0. 238,157, filed December6, 1927. Application for reissue filed February 4, 1930. Serial No.425,919.

As hereinafter described in detail, the complete machine or appliancecomprises a body having a tube or pipe engaging hook, a handle attachedto, or formed integral with the body which may be grasped by one of thehands of the operator,a bending sheave provided with gear teeth or amutilated gear, a pinion journalled in the body and adapted to mesh withthe aforesaid gear teeth or mutilated gear and having a handle which maybe grasped by the remaining hand of the operator, and a bending platesecured to the sheave as, for instance, to a flat part thereof, which isprovided with a hook adapted to engagelthe tube or pipe when the latteris located between the hook on the body and the sheave, whereby when thehandle for the pinion is'turned in the proper direction, thebendingplate will, by its grip on the tube or pipe, in conjunction withthe sheave, effect the desired bend. The machine is adapted to slightlybend a pipe or tube or to bend it to any desired angle or in any desiredcurve, according to the manipulation of the two handles of the machine.

In the accompanying drawings.

Figure 1 is aside elevation;

Fig. 2 is a side elevation showing how pipe or tube is bent by theappliance Fig. 3 is a plan view and Fig. 4 is a bottom view.

The body 1 is provided with a hook 2 and a handle 3, rigidly connectedto, or integral with, said body. A depressed surface 1 may beprovided'in the handle to receive the name and address of themanufacturer.

Mounted to turn in a bearing 9 on the body A headed pin 5, which issecured to and- 1, is the shaft 10 having a pinion 11 meshing with teeth7 and provided with a handle 12.

Secured to the flattened part 8 by a machine screw 13 is a bending plate14- having a hook15.

A piece of tube or pipe undergoing bending is shown at 16.

If desired, the inner surface of hook 15 may have teeth, or corrugationsto better grip the tube orpipe 16.

Having turned the handle 12 to position the hook 15 opposite the groovein sheave 6, the tube or pipe 16 is passed through the hook 2 andengaged with the hook 15. The operator grasps handles 3 and 12 and turnsthe latter to bend the pipe or tube into the curve or angle desired. Thediameter of pinion .11 being small in relation to'that of sheave 6, thetube-or pipe is easily bent. As

made to accommodate the desired connections, etc., the bending devicemay simply be applied to the work as above set forth and the bendingoperations may then be performed merely by turningthe handle withoutholding the handle 3. This leaves one hand of the operator free, whichis obviously a desirable condition.

VVhat-we claim is: V 1. The hereindescribed portable pipe and tubebender, comprising a body having a pipeengaging hook at one end and ahandle at its other end to enable said bender to be held by theoperator, a sheave having a grooved edge and journalled to the body,said sheave being provided with gear teeth, said sheave and hook lyingin substantially the same plane, an elongated bending plate attached tothe sheave and lying in the plane thereof, said plate having a hookedend projecting over the grooved edge of the sheave and adapted to gripthe pipe or tube tobe bent, the firstnamed hook serving as an abutmentfor the pipe or tube, a shaft mounted on the body and provided with a Ipinion which meshes with the gear teeth of the sheave, and a handlewhereby said shaft may be turned.

2. A device for bending pipes and the like,

, comprising a body member, a wheel rotatably mounted on said bodymember and having a peripheral groove therein for forming the desiredbends in the work and also having gear teeth formed integrally around aportion of its periphery and lying in parton each side of themedialplane-of said groove, a

pinion rotatably mounted on said body member and having itsaxis fixedwith respect to said body member and its teeth meshing with the gearteeth of said wheel, and means for imparting rotation to saidpinion.

3. A device for bending pipes and the like, comprising a body member, awheel rotatably mounted on saidbody member and having a peripheralgroove therein for forming the desired bends in the Work and-also havinggearteeth formed integrally. around, a portion of its peripheryandlsubstantially inthe plane of said. groove, a, pinion rotatablymounted on saidbod y member and having its teeth meshing with the gearteeth of said wheel, a handle for imparting rotationto said pinion, andguidmg means on said body mem ber'for engaging the work,tlie entiredevice being constructed as a readilyportable hand tool requlringnofixed support, andsaid guiding means cooperatlng w ththe work when thelatter isfizied in position so thatthede;

vice maybe operated Without any support other than that afforded by thework itself. 4. A device for bending pipes and-the like,

, comprising a body member, a wheel rotatably mounted on said bodymember and having a perlpheral groove therein for-forming the Idesiredbends in thework, meansfor effecting relative rotation betweensaid wheel and said body member, and guiding means on said body memberfor engaging the work, the en tire device being constructed as a readilyportable hand tool requiringjno fixed sup port, and said guiding meanscooperating with the work when the latter is fiXedin position'so thatthe device may be operatedwithout any support other'than'thataffordedbythe work itself.

I peripheral groove therein for forming the des red bends n thework,means for effecting" 5 A device for bending pipes and, thelike,Comprising a body member, a wheel rotatably mounted on saidbody memberand having a relative rotation'bet-ween said Wheel and said I bodymember, guiding means on said body a member forengagingthe work, and ahandle on said body member for carrying-and sup-' porting the device,the entire; device a constructed as a. readily portable hand tool I Irequiring nosupport in operation? other than that of the hand of theoperator'onsaidhalr dle, and said guiding means cooperating with thework when the latteris fixed in position so that the device may beoperated without any support other than'that afforded by the workitself.

6. A device for bending pipes and the like,

comprising a wheel having a "peripheral groove therein for forming thedesired bends in "the Work and having a portion thereof cut away toleave a flat surface extending along a chord of the periphery of theWheel, and means for holding the work in desired relation to saidperipheral groove, comprising a -hooked member pivotally mounted on saidwheel; p a

7. A device for bending pipes and the like, comprising a wheel having aperipheral groove therein for forming the desired bends in the work, anda hooked-member.pivotalily flat surface for movement transversely of themounted on said wheel for movement into and out vef engagement with thework to hold the "latter in desired relation to the said peripheralgroove in said wheel during operation of the device, such movementtaking place only said Wheel.

in, a planetransverse to that of 8.. A device for bending pipes and thelike, i i

, comprising" a body member, a Wheel pivotally mounted :on saidbodymember and having a peripheral groove therein for formingfthe desiredbends in the worln rotatable means coacting directly between said wheeland said body member for eflecting relative rotation therebetween, and a[grooved abutment formed integrally with said bodymember, for

guiding the work in desired relation to said .19. :A device for bendingpipes andthe like,'

comprising a body member,a Wheel.pivotally mounted on said body memberand having a peripheral groove of substantially semicircularcross-section therein for forming the desired bends in the work,rotatable means coasting directly between said wheel and said. bodymember for efi'ecting relative rotation therebetween, and an abutmentformed intes grally with said body member with one end thereof lying insubstantially tangential relation to saidwheel and having asubstantially semi-cylindrical groove therein with its cross-section:complementaryv to that of the peripheral groove in said wheel at theplace of tangencyi of: said abutment and 'wheel; said abutment guidingthe work in desired relation to said wheel.

'- 10. A device for bendingpipes and the like, comprising a bodymember,. a wheel p'ivotally mounted on said body member and I havingaperipheral groove of substantially semi-circular cross-section thereinfor form-i 1ng the desired bends 1n the work, rotatable meanscoactingdirectly between said-wheel and said body member for effectingrelative rotation therebetween, and an abutment on said body member withone end thereof lying in substantially tangential relation to said Wheeland having an elongated, substantially semi-cylindrical groove thereinwith its cross-section complementary to that of the peripheral groove insaid Wheel at the place of tangency of said abutment and Wheel, saidabutment guiding the Work in desired relation to said Wheel.

In witness whereof, We have hereunto su scribed our names.

WALTER ESTES HOLSCLAW. HARRY ELSTON HOLSCLAW.

